Lack of hardness (soft film)

 

Soft coating which can be easily removed by scraping the surface.

Soft coating which can be easily removed by scraping the surface.

Causes

  1. Contaminated surface: grease, oil, wax, etc.
  2. Product alteration: oil, drying agent, etc.
  3. Product incompatibility.
  4. Products which are too old.

Solutions

  1. Clean surfaces and remove coating by scraping, sanding or thinning surfaces. Clean surfaces again and apply coating.
  2. Also for causes 3-4: Clean surfaces and remove coating by scraping, sanding or thinning surfaces, then apply new coating.
  • Most of the products are ready to use and the addition of an additive may affect their performance.
  • Never apply a quick-drying varnish on a different type of varnish.